>So Tony, why don't the chips program in any case? They are still in LV =
mode
>(as inferred by you) and everything else is the same as for HV mode, =
right?

My understanding is that Programming Mode is set by  an AND of HV on the =
MCLR pin with (RB3 low AND LVP true). I think I have the logic of that =
correct. In essence if LVP mode is set, then RB3 has to be LOW to =
program, wether doing it by low voltage or high voltage.=20

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